The "Content Collection" downloadable content for the PC version of Call of Duty: Modern Warfare 3 will finally be hitting on the 8th May, after having been released on the Xbox 360 in January for Call of Duty: Elite users, regular Xbox 360 gamers in March, and the PlayStation 3 in April.
The DLC includes four multiplayer maps and two Spec Ops missions. Check out the official trailer for more information on the DLC.